Octopus name is derived from the Greek word meaning "Eight Feet". Octopus is a marine organism. In this article we will learn some interesting facts about Octopus.

There are some interesting facts about Octopus:

1. Octopus are very strong minded. About 500 million neurons are found in them. In their ganglion neurons nervous system, the central brain is under each arm, which keeps every movement of them under control.

2. Large-sized octopus can also kill some species of shark.

3. The smallest octopus in the world is named "Wolfi Octopus".

4. A giant octopus was found in southern Canada in the year 1957. Its weight was about 271 kg, its arms were 5 meters long.

5. Some species of octopus are very poisonous, a single bite can kill a person. Due to its poison some scientists have also called it a monster of the depths of the sea.

6. Its special thing is that even after the octopus arm is cut, its arm comes back again.

7. 300 species of octopus are found which live in the depths of the sea or on the sea level and come to the upper part of the sea in the morning in the search of food.

8. The octopus has a very short lifespan. They live for at least 6 months and at most 5 years.

9. Octopus has 3 hearts. Two of these hearts work to supply blood, while the third heart circulates blood to the rest of the body. The octopus has the blue blood.

10. Octopus are very hungry, they eat their own arms when they are hungry.

11. The octopus has a circular shape mark in two lines on its eight arms, in which the sensory receptors help them to identify anything by touching them.

12. Usually the octopus is of many sizes. The most commonly found "Vulgaris Octopus" is 13-35 inches long and weighs 4-9 kg.